Function pointers, Closures, and Lambda

Question

I am just now learning about function pointers and, as I was reading the K&R chapter on the subject, the first thing that hit me was, \"Hey, this is kinda like a closure

Answer 1

In C a function pointer is a pointer that will invoke a function when you dereference it, a closure is a value that contains a function's logic and the environment (variables and the values they are bound to) and a lambda usually refers to a value that is actually an unnamed function. In C a function is not a first class value so it cannot be passed around so you have to pass a pointer to it instead, however in functional languages (like Scheme) you can pass functions in the same way you pass any other value